Oil & Gas
| Wed 20 Jan 2021
Beijing, Jan. 20 -- Petrochina Co Ltd has submitted a patent application for preparation method of magnesium salt precipitation modified y-type molecular sieve. Liu Zhaoyong, Zhao Lianhong, Zhang Zhongdong, Liu Tao, Wang Chenchen, Liu Mingxia, Zhai Jianing, Cao Gengzhen, Sun Xueqin, Cao Lanhua, Sun Yanbo and Su Yi developed the ..